A Boot

1. (archaic, dialectal) Remedy, amends.
2. (uncountable) Profit, plunder.
3. (countable, uncountable) That which is given to make an exchange equal, or to make up for the deficiency of value in one of the things exchanged; compensation; recompense.
4. (obsolete) Profit; gain; advantage; use.
5. (obsolete) Repair work; the act of fixing structures or buildings. [to mid-17th c.]
6. (obsolete) A medicinal cure or remedy. [to mid-16th c.]